EP0750073A2 - Water chamber of an elevated water reservoir - Google Patents

Abstract

The chamber is esp. used to hold drinking water at the top of a hill. The dividing walls (10) for the annular tank space are disposed radially. The walls are arranged to give an offset configuration. A feed pipe with a feed nozzle is arranged on one side of the dividing wall structure and an outlet pipe with a run-off point on the other. The profile of the wall is such that the inflow (X) is in the radial outer region and the outflow (Y) is in the inner region.

Description

The present invention relates to an elevated tank for drinking water storage according to the preamble of claim 1.

Elevated tanks of the aforementioned type are known in connection with the water supply to cover the water requirement with drinking water (compare FR-A-1 037 086 and DE-C-229 411). The water is supplied from the extraction points to the waterworks, where it is treated to pure water, stored in water tanks - for example in generic high tanks - and conveyed to the distribution systems (namely the pipe network of the municipal water supply facilities).

In the well-known high tanks, it is shown again and again due to the design that the movement and circulation of the drinking water in the water chamber is inadequate. Even in connection with circular water chambers, in which the drinking water should flow from the inlet pipe to the tapping point due to a design gradient, is always again to find that relatively large quiet zones, not to say dead zones, develop in which practically no water exchange takes place.

The object on which the present invention is based is therefore to specify an elevated tank in which the above-mentioned problem is solved.

The basic solution set is given by the features specified in claim 1.

In other words than those used in claim 1 cited above, the essence of the present invention is to provide an elevated tank of the generic type, in which the drinking water to be (temporarily) stored is inevitably moved through the entire water chamber before it goes into the outlet or tapping point Pipeline network flows off.

This problem is solved functionally in that the drinking water supplied to the elevated tank is subjected to a forced movement or forced circulation on the way for later removal, without any rest zone and without any short-circuit flow. This forced circulation is achieved by dividing the water chamber at least once, with the drinking water then being fed on one side of the partition of the water chamber and being discharged (again) on the second side. The drinking water supplied must therefore pass through the water chamber completely so that 100% circulation is guaranteed, at all times and over the entire width of the annulus of the water chamber.

In a special and simple embodiment, the annular space partition is arranged radially. In this case, the inlet pipe has inlet nozzles on one side of the annular space partition and the removal tube has a removal slot on the second side of the annular space partition.

In a preferred embodiment, the annular space partition is arranged obliquely in the water chamber in order to maximize the circulation of the drinking water. The inclined position of the annular space partition is selected depending on the arrangement of the inlet and outlet points, and the bottom of the water chamber is also inclined, equally depending on the inlet and outlet points of the drinking water.

A special construction provides two annulus partitions. This divides the water chamber into two and, in the event that a fire should break out, for example, during a thorough cleaning of the elevated tank, the so-called fire reserve; as well as ensuring the supply of the population.

Fig. 1

einen Hochbehälter in geschnittener Ansicht als Systemschnitt A-A entsprechend dem Grundriß nach Fig. 2;

Fig. 2

eine Aufsicht auf den Grundriß des Hochbehälters nach Fig. 1.

The details of the present invention are explained below with reference to the drawing. This shows in

Fig. 1

an elevated tank in a sectional view as a system section AA according to the plan of Fig. 2;

Fig. 2

a plan view of the floor plan of the elevated container of FIG. 1st

The elevated tank 1 shown as a whole in Fig. 1 and Fig. 2 as a whole consists of an annular water chamber, i.e. an annular circular basin 2, and a circular cylinder used coaxially in the circular basin, hereinafter referred to as the round tower 3. This round tower 3 has three levels and serves as an operating and slide chamber 3.1 in the lower area and as a control building 3.2 in the area above. The round tower 3 accordingly contains all installations and equipment for the intended operation and monitoring of the elevated container 1. Above ground, an entrance area 8 is arranged, the individual floors or levels being reached via radial steps attached to the round slide chamber wall, or optionally via a spiral staircase. A crane rail for a hoist can be attached to the ceiling of the entrance area; Openings are provided in the middle of the false ceilings through which the slide and devices can be easily installed and maintained. In the round tower 3 a pressure booster system for individual houses or construction areas can of course also be installed; electrical devices and switch cabinets or the like are accommodated in the upper entrance area 8 for obvious reasons.

The circular circular basin 2 and the round tower 3 are based on a common homogeneous base plate 4, the circular ring between the round tower 3 and a concentric outer wall 5 of the circular basin 2 determining this circular basin 2 in terms of dimensions. Since the entire structure is based on a uniform floor slab 4, which is only interrupted by a lower part of the operating and slide chamber, damage is separated, which would otherwise be caused by individual settlements Components and can only be prevented from the outset by means of complex expansion joints and elastic pipe connections.

The water chamber, i.e. the circular pool 2 has a cover plate 6, on which soil 7 is deposited for the purpose of geological embedding in the terrain. Thus, in the end, only the entrance area 8 for the round tower 3 protrudes from the ground 7, so that - unlike the known high tanks - only a relatively small part of the entire elevated tank 1 is visible (and disturbs the landscape). In this regard, it should be particularly pointed out that there are no ventilation and venting stubs at any point in the ground.

The previous description of the elevated container 1 shown in the drawing relates solely to its basic conceptual task. From a construction point of view, the above-described elevated tank 1 is supplemented or modified to the extent that the circular circular basin 2 is separated by two obliquely located annular partition walls 10.1 / 10.2.

According to the illustrated embodiment, the two annulus partitions 10.1 / 10.2 are arranged approximately so that they start in two opposite quadrants of the circular basin 2 between the round tower 3 and the outer wall 5, namely from the round tower 3, at an angle of about 60 ° to the outer wall 5 lie down; both annulus partitions 10.1 / 10.2 are parallel to each other.

With regard to the intended function, on the one hand there is an inlet for the drinking water, ie an inlet pipe 11, and on the other hand for the withdrawal Extraction tube 12 is provided. The inlet pipe 11 and the extraction pipe 12 lead parallel to one another radially to the round tower 3, ie to the slide chamber 3.1, and are extended radially from here to the annular space of the round basin 2. Inlet pipe 11 and outlet pipe 12 are thus guided diametrically to one another in the form of two inlet ports 13.1 / 13.2 and in the form of two outlet ports 14.1 / 14.2 into the circular basin 2. The inlet connections 13.1 / 13.2 are each guided up to the vicinity of the outer wall 5, in such a way that they cross the associated annular space partition 10.1 or 10.2. The sampling ports 14.1 / 14.2 are in turn guided so that they end in the inner gussets between the round tower 3 and the annular space partitions 10.1 / 10.2 in drain strainers 15.1 / 15.2.

In operation, the drinking water supplied by the waterworks via the inlet pipe 11 is introduced into the water chamber (round basin 3) via the ends of the inlet connections 13.1 / 13.2 (see arrow X). After a 180 ° circulation, the drinking water is then fed into the municipal water supply network via the drain strainer 15.1 / 15.2 (see arrow Y), the tapping nozzle 14.1 / 14.2 and the tapping pipe 12.

For the sake of completeness, it should also be noted that in connection with the previously mentioned exemplary embodiment, the bottom sole 4.1 of the water chamber can be designed to drop towards the center (see arrow Z). This further improves the flow conditions.

It should also be noted that the inlet / outlet direction or the inlet / outlet point can be changed. In this case, too to invert the inclination of the bottom of the water chamber.

The two water chambers can also be flowed through one after the other with the appropriate pipe installation in the basin chamber, which means that the fire extinguishing reserve is properly integrated into the circulation.

In the illustration according to FIG. 2, in addition to the inlet pipe 11 and the outlet pipe 12, a third pipe 20 is drawn. The task of this pipe is to be available for a basic emptying of the water chamber and for a possible overflow in the event of a malfunction. According to the exemplary embodiment shown, this third tube 20 is guided to the gussets between the round tower 3 and the annular space dividing walls 10.1 / 10.2 and connects to a channel with a drain 21.1, 21.2 which is lower relative to the bottom sole 4.1 of the water chamber. (In the case of counter-current drinking water supply, this third pipe 20 is to be led to the drainage point located outside).

In the present drinking water storage system, a forced flow through the entire water chamber is guaranteed. The water is fed through nozzles in one corner of the tip and must flow through the entire chamber until it is removed via a drain strainer in the opposite corner of the tip. This ensures 100 percent circulation.

With regard to the present invention, the above-described elevated container 1 - compare FIG. 1 - further equipped as follows in terms of device and installation technology:

In the upper area of the entrance area 8 of the operating and slide chamber, a supply and exhaust air device 30 is attached, to which a first ventilation line 31 is connected for ventilation of the water chamber. This first ventilation line 31 leads vertically downwards to a measuring and control chamber 32 which is equipped with filters and air analysis devices (sensors). The supplied air is thus continuously analyzed by the measuring and control chamber 32 and released again on the output side, specifically via a ventilation pipe socket 33 which leads into the interior of the water chamber.

The entire supply and exhaust air system thus consists of the central first ventilation line 31 (plus ventilation pipe socket 33), in the course of which the measuring and control chamber 32 is integrated, which constantly monitors the supply air and, in the event of a fault, to generate corresponding (alarm) signals can This can be used to control an automatic shutdown of drinking water withdrawal.

Regarding the function, the following should be pointed out: With the rising and falling of the water level W in the water chamber, i.e. in the circular pool 2, air is pressed outwards or sucked in from the outside. This sucked-in air is then examined by measurement technology.

In order to be prepared for the case of an approximately introduced or injected liquid, the measuring and control chamber 32 is arranged below the level of the ventilation pipe socket 33. So that is ensures that inadmissibly supplied liquids flow down through a drain pipe 34 and thus cannot get into the stored drinking water. If necessary, a closing ball can be placed on the pipe start of the air pipe socket 33 lying in the measuring and control chamber 32, which automatically closes the ventilation pipe socket 33 when the liquid level in the measuring and control chamber 32 rises.

The water chamber is completely closed (encapsulated) and it can only be visually monitored through portholes 40 and entered via pressure doors 42 in the emptied state. Since the air exchange takes place exclusively via the measuring and control chamber 32, optimum operational reliability is provided. Only as much air reaches the drinking water as is necessary for keeping it fresh and for physical pressure equalization, and the water temperature itself can be kept largely constant throughout the year.

At this point it should also be noted that to optimize the temperature balance between the water chamber and the operating and slide chamber, a second ventilation line 41 is provided, which the air directed to the lower region of the round tower 3 due to a conduction through the water chamber due to the heat exchange effect on the same Temperature as the water temperature brings. Any undesirable temperature jump between the water chamber and the round tower 3 is thus minimized or compensated for. The formation of condensation water cannot take place, so that dry walls are always guaranteed in the operating and slide chamber.

According to a particular constructive embodiment, it is provided that the cover plate 6 is supported on the outer wall 5 and on the two lower floors / levels of the round tower 3, so that - viewed statically - there is overall a uniform structure.

This entire structure can be made of in-situ concrete; It is also conceivable to produce the base plate 4 from in-situ concrete and to create the ring walls 5 of the round basin 2 and the round tower 3 including the entrance area 8 from prefabricated concrete parts.

Claims (8)

Elevated tank (1) for drinking water storage,
Consisting of an operating and slide chamber (3.1) (control building) and a circular chamber for drinking water, as well as at least one inlet (11) and at least one outlet (12) for the drinking water,
the chamber for drinking water being designed as an annular round basin (round structure) (2),
the operating and slide chamber (3.1) being designed as a circular cylinder arranged concentrically in the round basin (2) (referred to as the further round tower 3), and
wherein the round tower (3) and the round pool (2) are based on a common base plate (4) and the round tower (3) is hermetically sealed off from the round pool (2),
characterized,
that at least one annulus separating wall (10.1, 10.2) separating the circular annulus of the circular basin (2) is provided, on one side of which at least one inlet on the bottom side and on the other side of which at least one outlet on the bottom side are provided. Elevated container according to claim 1,
characterized,
that the annulus / annulus (10.1, 10.2) is / are arranged radially. Elevated container according to claim 1,
characterized,
that the annulus / annulus (10.1, 10.2) is / are arranged obliquely. Elevated container according to claim 2 or 3,
characterized,
that the annulus partition (s) (10.1, 10.2) are assigned on the one hand an inlet pipe with at least one inlet nozzle and on the other hand an extraction pipe with at least one outlet point. Elevated container according to claim 3 or 4,
characterized,
that the annulus partition (s) (10.1, 10.2) is / are arranged so that the radially outer edge (s) lag behind the flow direction, the inlet (compare X) in the radially outer region and the outlet (compare Y ) are provided in the radially inner area. Elevated container according to one of claims 1 to 5,
characterized,
that the bottom sole (4.1) of the water chamber drops conically inwards (Fig. 2). Elevated container according to claim 3 or 4,
characterized,
that the annulus partition (s) (10.1, 10.2) is / are arranged obliquely in such a way that the radially outer edge (s) leads / lead relative to the direction of flow, the inlet being provided in the radially inner region and the outlet in the radially outer region. Elevated container according to claim 7,
characterized,
that the bottom of the water chamber slopes conically outwards.

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